GREETINGS

1) "Hey there, Hey, Hey man, Hello or Hi'' : This is casual, friendly, and familiar. It could be used between good friends or romantic partners in spoken English, text messages, voice mail messages or emails.

2) "Hey! There she/he is" : This is usually used in situations when you know the person well and it implies that you have been expecting to see the person or that you are very happy to see the person. Emphasis with pronunciation is placed on "there."

 3) "Hey! What's up?" : This is casual and could be used between friends, colleagues, siblings, etc.

4) "What's going on? What’s new? How’s it going?  How are you doing? How's life? " : These are casual and could be used between friends or acquaintances in an informal situation like a party.

 5) "How's everything?" : This is simply another way of saying "how are you." It is usually used casually.

6) "How are things?" : This is very similar to "how is everything?" and is perhaps more casual than "how is everything?"

7) "How's it going?" : This is casual, especially when you shorten it as in "How's it goin'?

8) "How are you doing today?" : This is formal and might be used between a professional and a client or customer or between colleagues or a boss and his or her workers.

9) "Good to see you," "great to see you," "nice to see you" : These could all be used informally or casually between business colleagues, friends, or family members. These phrases are often used when you haven't seen the person in a while.

10) ''Long time no see! It’s been ages! (since I’ve seen you.) / Where have you been?'': you may use one of these expressions when you have not seen a friend or family member for a very long time.

Slang English Greetings

1. Yo!

2. Are you OK?, You alright?, or Alright mate?

3. Howdy!

This is a very informal abbreviation of “how do you do?” 

4. Sup? or Whazzup?

Example:

Andrew: Hey man, how’s it goin’?

Joel: Hey, it’s goin’ good man, how are you doin”?

Andrew: I’m doin’ fine. What’s new?

Example:

Andrew: Hey man, what’s up?

Joel: Hey, not much.  What’s new with you?

Andrew: Oh you know, same old, same old. 

_{GOOD BYE}

1) "See you later" or "see ya later" : This becomes more casual when you use "ya" instead of "you."

2) "See you soon" or "see ya soon" : This is similar to the example above. It can be used to indicate that you want to or plan to meet with the person again soon.

3) "Take care" : This could be formal or casual, but is usually used with people you know or care about. You might use this in an email or written letter.

4) "Gotta go!" This is used in casual situations when you want to escape the conversation quickly and you don't want to go through a longer or more sentimental goodbye.

5) "Talk to you soon" : This is used more often in writing emails or on the phone than in daily spoken interactions. It is usually casual.

6) "See you next time" : This is used when you know you will be returning to a specific place and you will see the person when you come back.

7)"Catch ya later" : This is used very casually between friends or acquaintances.

8) "Have a good one" : This means, "have a nice day" and is used casually, but it could be used between strangers, friends, colleages, or family members.